Safety device foe elevators



(No Model.) 3 Sheets-Sheet 1.

H. BAUM. SAFETY DEVICE FOR ELEVATORS.

N0. 604,557. Patented May 24, 18 98.

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SAFETY DEVICE FOR ELEVATORS. No. 604,557. Patented May 24,1898.

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H. BAUM. SAFETY DEVICE FOR ELEVATORS.

No. 604,557. Patented May 24, 1898.

NIIFD dramas PATENT (Clarion.

HEINRICH BAUM, OF DUDW'EILER, GERMANY.

SAFETY DEVICE FOR ELEVATORS.

$PEGIFIGATION forming part of Letters Patent No. 604,557, dated May 24,1898.

Application filed January 4, 1 8 9 8.

To all whom it may concern.-

Be it known that I, HEINRICH BATH 1,100];- smith, a subject of theEmperor of Germany, residing at Dudweiler, Kreis Saarbriick, in theEmpire of Germany, have invented certain new and useful Improvements inSafety Devices for Elevators; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

My invention relates to a novel construction in a safety device forelevators, the object being to provide a device which will automaticallyprevent the cage of an elevator from dropping when the cable breaks andit consists in the features of construction and combinations of partshereinafter fully described and claimed.

In the accompanying drawings, illustrating my invention, Figure 1 is aside elevation of an elevator-cage provided with my devices forpreventing the same from falling and showing one of the guides for samein elevation. Fig. 2 is a side elevation of the cage at an angle ofninety degrees to Fig. 1. Fig. 3 is a plan view of the cage. Fig. 4: isa detail view showing the safety-clutches in position to clutch theguides. Fig. 5 is a detail view showing the toothed face of one of theclutches. 7

Referring now to said drawings, a indicates the shank of the draft-headof the cage, to which cables (which I have not shown) are secured. Ahead a is mounted on the lower end of said shank CL and is connectedwith links g and the ends of lever c by means of chains 1), secured attheir upper ends to loops secured to said head a by means of bolts 9'.The links g, which consist of sleeve-bolis, connect the levers c withthe levers c and 0 All of said levers are pivoted at their inner ends tolugszv on the guide-bars of the cage adjacent the guide 7.; of theelevator-shaft and are provided at their inner ends with eccentrictoothed faces, as shown in Fig. 4, which are adapted to firmly engagesaid guides 76 when said levers assume the position shown in Fig. 4.Flat springs f bear upon the rear ends of said lovers 0' and c and serveto depress said rear ends of said levers when same are released by theparting of the cables from Serial No. 665,640. (No model.)

which said cage depends. terposed between the upper end of said head aand the arch-bar of the cage through which the shank a passes. theeffect of depressing said head a as soon as the cable parts, thusrelieving the tautness of the chains 1) and permitting the outer ends ofthe levers c, c, and c to be depressed, thus throwing the eccentric endsof the levers into engagement with the guide 70, which is thus firmlyclutched by said levers, thus preventing said cage from dropping. Tohold said lovers 0, c, and normally in the position shown in Fig. 1, Iprovide lugs a: on. the guide-bars of the cage immediately above saidlevers 0, against which the latter normally abut. The ends of the leverse, on opposite sides of the cage, are connected by means of cross-rodse, which serve to prevent the chains 1) from drawing said ends of saidlevers inwardly. To still further insure the operation of said levers c,c, and c in case of accident, I have provided slots 2 in said levers cand 0 in which the ends of beams Z, supporting the rails n, are mounted,so that the weight of the beams and rails and cars on said rails willfurther act to depress the ends of said levers and cause the same tomore firmly embed themselves into the guides k.

I claim as my invention A safety device for elevators comprising leverspivotally mounted on the cage and provided with serrated eccentric endsadapted to engage the guides in the elevator-shaft, connection betweenthe outer ends of said levers and the cables supporting said cage tohold said levers normally out of engagement with said guides of saidshaft, and connection between said outer ends of said levers and theload-carrying devices of said cage whereby the strain is adapted to betransferred from said cables to said levers when said cables part tothrow said eccentric ends of said levers into engagement with saidguides of said shaft, substantially as de scribed.

In testimony whereof I affix my signature in presence of two witnesses.

HEINRICH BAUM.

Witnesses:

CHAs. H. DAY, HENRY IIASPER.

A sprlng 1s 1n- The said springc' has

